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arXiv 1004.4015math.AP
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FENE哑铃型聚合物流动模型整体弱解的存在性

Global existence of weak solutions to the FENE dumbbell model of polymeric flows

Nader Masmoudi

摘要:

流体和聚合物的耦合系统在许多科学分支中都有很大的兴趣。描述它们的模型之一是FENE(有限可伸展非线性弹性)哑铃模型。我们证明了一类非常一般的势函数下,聚合物流的FENE哑铃模型的弱解的整体存在性。主要的问题是在一个非线性项,没有明显的紧性性质的极限通道。证明使用了许多弱收敛技巧。特别是它是基于控制的传播强收敛的一些精心选择的数量通过研究其缺陷措施的输运方程。

英文摘要:

Systems coupling fluids and polymers are of great interest in many branches of sciences. One of the models to describe them is the FENE (Finite Extensible Nonlinear Elastic) dumbbell model. We prove global existence of weak solutions to the FENE dumbbell model of polymeric flows for a very general class of potentials. The main problem is the passage to the limit in a nonlinear term that has no obvious compactness properties. The proof uses many weak convergence techniques. In particular it is based on the control of the propagation of strong convergence of some well chosen quantity by studying a transport equation for its defect measure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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